Bronkhorst, J.J.; Coles, J.D.W.A.; Du Toit, P.J.
(Pretoria : The Government Printer, 1946)
Thirty-nine spontaneous cases of osteopetrosis have been studied in the
Onderstepoort experimental flock of fowls, and the disease has shown a
striking tendency to affect some families more than others. Evidence has
been ...